# A175487 (b-file synthesized from sequence entry)
1 2
2 7
3 37
4 127
5 397
6 3613
7 18089
8 162881
9 1791787
10 41211197
11 370900973
12 4821712733
13 43395414737
14 477349562419
15 4296146062051
16 227695741289567
17 9335525392876531
18 326743388750679161
19 16663912826284638251
20 583236948919962339073
21 9915028131639359764313